| class Solution: | |
| def isHappy(self, n: int) -> bool: | |
| numbersAlreadySeen = set() | |
| number = n | |
| while True: | |
| nextNum = 0 | |
| for digit in str(number): | |
| nextNum += int(digit) * int(digit) | |
| if nextNum in numbersAlreadySeen: | |
| break | |
| numbersAlreadySeen.add(nextNum) | |
| number = nextNum | |
| return 1 in numbersAlreadySeen | |
| nums = [23, 12, 10, 0, 65] | |
| ob = Solution() | |
| for num in nums: | |
| print(ob.isHappy(num)) |